hallin



F. W. HALLIN, CONDUII ViSE. APPucA non FILED JULY :5. ma. 1,317,973.Patented Oct. 7,1919.

' 2 SHEETS-SHEET I.

FRANK WM. BALLET, OI GBISTOBAIJ, CANAL ZONE,

GONDUIT-VIBE.

Specification 0! Letters Patent.

Patented Oct. '7', 1919.

1 Application filed July 15, 1918. Serial No. 244,988.

To all them it may concern:

Be it known that I, FRANK WILLIAM HALLIN, a citizen of the United Statesof America, residing at Cristobal, in -the Canal Zone, have inventedcertain new and useful Improvements in Conduit-Vises, of which thefollowing is a s ecification.

This invention re ates to certain new and useful improvements in pipebending vises of that type wherein reversible dles are utilized against,which the pipe or conduit ma be shaped.

a he primary object of this invention is the provision of a pipe bendingvise having a novel form of die wlth provision for securing the same atopposite sides of the vise to permit bending o the pipe or "conduit ineither direction.

A further object of the invention is the provision of a means forholding the pipe while being bent which is of yieldable construction sothat the pipe may be moved relative thereto by force although securelyheld against movement when being bent.

A still further object of the invention is the provision of a pipebendin vise having a reversible die of substantia 1y flat iron formwhose opposite sides are grooved in different sizes to accommodate pipesof varyin diameters.

' ith these general objects in view and others that will appear as thenature of the invention is more fully understood, the same consists inthe novel construction, combination and arrangement of parts hereinaftermore fully described, illustrated in the accompanying drawings, and thenclaimed.

In the drawings forming a art of this application and in which likeesignating numerals refer to corresponding parts throughout the severalviews,

Figure 1 is a rear elevational view of the present invention with a diemounted on the base plate thereof, and a pipe indicated by dotte lines,

Fig. 2 is a view partly in plan and partly in section taken on line 22of Fig. 1

Fig. 3 is a vertical sectional view ta on on line 33 of Fig. 2, and

Fig. 4 is a perspective view of the die.

Referrin more in detail to the several views, the present inventionprovides a substantially rectangular base 5 having a rear arcuate edgeportion 6 which is provided with a plurality of angle indications 7, the

purpose of which will be hereinafter made clear. Ad acent the forwardportion of the base plate 5, u standing lu 8 are provided, substantiallyetween whic is rigidly posit1oned a serrated pipe-engaging jaw 9.

An mverted U frame 10 has a screw 11 threadedmherethrough as shown inFig. 1 and loosely attached to the lower end of said screw 11 is amovable cross-head 12 slidably gulded upon the ribs 13 of the frame 10and carrying another serrated jaw or pipe-engaging member 14. The looseconnection be tween the member 12 and the screw 11 is shown clearly inFig. 1 and consists broadly m providing a reduced end 15 of the screw 11with a head 16 arranged in a relativel larger recess 17 of the member12. Il,h1s construction allows a slight vertical movement of the member12 relative to the screw 11, which movement is yieldably opposed by ahelical spring 18 bearing against the member 12 at its lower end andagainst the upper portion of the frame 10 at its upper en The lower orfree ends of the arallel legs of the U frame 10 are connected to theupstandin lugs 8 detachably and pivotally by a suitalfie pin 19, oneposition of which is indicated by dotted lines in Fig. 1 and the otherof which is indicated byfull lines in the same fi re. Pivotally attachedas at 20 to one si e of the frame 10 is a hook member 21 adapted tod'etachably engage alateral rigid lug 22 extending from the adjacent lug8so as to maintain the frame 10 m the operative position indicated inFig. 1.

By providing pins 19 and 20 so as to be readily withdrawn, the U frame10 may be allowed to hinge either to the right or left in case theoperator is working near an obstacle such as a wall at one side of thebench to which the present device may be attached by means of boltsextending through apertures 23 in the base plate 5.

Rearwardly of the lugs 8 and U frame 10, the baseplate 5 is providedwith suitable threaded apertures 24 adapted to receive the threaded end25 of a winged bolt 26 which is extended through the central aperture 27of the die 28, to secure the latter in position upon the base plate 5 asmore clearly shown in Figs. 2 and 3. The die 28 is substantialli of flatiron form having oppositely curve arcuate sides provided with groovestherein as at 29 and 30 of difieriug widths to accomlate 5 from thatindicated in full lines in ig. 2 and as indicated by dotted linestherein, and the provision of the threaded apertures 24 at each side ofthe base plate 5, per:

mits this to be done. The graduations 7 are provided at suitable pointsso thatthe die 28 may be readily positioned in order to limit thebending of pipe 31 at any desired e as.

t is noted that the base plate 5 on which the bending die 28 is located,is the usual bed plate which forms the base of practically all pipevises and extends to therear of the vise, the bending of the pi e beingaccomplished rearwardly of the evice, while the strai ht end of the pipein front of the vise may be readily measured, cut and threaded ail withone placing of the pipe.

The spring 18 takes up the slack which may occur between the bill of thehook 21 and the lug 22 in addition forcing the jaw 14 downwardly withsufficient pressure to maintain the pipe 31 in the vise. This holds theconduit in lace without being firmly clamped by t e screw and obviatesthe necessity of clamping the jaws of the vise by turning the screw 11each time a .length of pipe is inserted to be bent. The trigger 21 atthe side is released to remove the conduit and the hook enga ed with thelug 22 to clamp the pipe in p ace.

While the form of the invention herein shown and described is believedto be the preferred embodiment thereof, it is to be understood thatminor changes may be made therein without departing from the spirit andscope of the invention as claimed.

' What I claim as new is 1. A pipe bending vise includi a horizontalbase plate having a pi e hol ing vise mounted thereon adjacent t e frontedge thereof, a reversible die having an arcuate rooved side andarranged u on the upper ace of the base plate rearwar ly of the vise,and means including an upright pivot member to detachably and pivotallysecure said die on the base plate at either side of the longitudinalcenter thereof.

2. A pipe bendin vise including a horizontal base late aving a pair oftransversely aline spaced parallel threaded apertures therethrough atopposite sides of the longltudmal center thereof, a pipe holding visemounted on upper face of said base plate adjacent the front edge thereofa reverslble die arranged upon the upper face of said base platerearwardly of the vise, and an upright threaded bolt extendingdownwardly through said die and adapted to en gage one of said threadedapertures to detaohably and pivotally secure the die in position ateither side of the longitudinal center of the base plate.

3. A pipe bending vise including a base plate having a pipe clampingvise mounted transversely thereon adjacent the forward edge thereof andprovided with an arcuate series of angle graduations thereon adjacentand along the rear edge thereof, a reversible die upon said base platebetween the pipe clamping vise and said graduations, and means-includingan upright pivot member to detaohably pivotally secure said die upon thebase plate at either side of the iongitudinal center thereof.

In testimony whereof I aflix my signature.

FRANK WM. HALLIN.

